Home / 39,311.63-54,248.41-21,406.59

Finding the Fourth Proportional to 39,311.63, 54,248.41 and 21,406.59

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Solution

The fourth proportional to 39,311.63, 54,248.41 and 21,406.59 is: 29,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.63 : 54,248.41 = 21,406.59 : x
  2. Step 2: Convert to fraction form
    39,311.63/54,248.41 = 21,406.59/x
  3. Step 3: Cross multiply
    39,311.63x = 54,248.41 × 21,406.59
  4. Step 4: Simplify right side
    39,311.63x = 1,161,273,497.78
  5. Step 5: Solve for x
    x = 1,161,273,497.78/39,311.63
  6. Step 6: Final answer
    x = 29,540.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.